Dream of

Well i had this weird dream some time ago.I was in the river,very clean one and also very deep.Weather was fantastic but stream was really quick.I was not alone in the water,there was my brother and my sister's daughter but none of us were scared at all,we felt very calm.while following the stream suddenly i saw 3 really big snakes of a green colour.None of them touched my family members or moved. suddenly one snake bit me two times on my right ring finger but it had no fangs.I did not feel pain and heard voice saying: "They;re not poisonous".What does this dream mean??